Pass camera facing to WebKit

media/capture/video_capture_types.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_CAPTURE_VIDEO_CAPTURE_TYPES_H_
 #define MEDIA_CAPTURE_VIDEO_CAPTURE_TYPES_H_
 
 #include <stddef.h>
 
 #include <vector>
@@ skipping 10 matching lines @@
 typedef int VideoCaptureSessionId;
 
 // Storage type for the pixels.
 // TODO(mcasas): http://crbug.com/504160 Consider making this an enum class.
 // TODO(chfremer): Extend or remove this enum.
 enum VideoPixelStorage {
   PIXEL_STORAGE_CPU,
   PIXEL_STORAGE_MAX = PIXEL_STORAGE_CPU,
 };
 
+enum class CameraFacing {
+  DEFAULT = 0,
+  // FRONT means a person's right will be on the left in the video.

[wuchengli, 2017/01/09 08:28:00]

This is not always true. Apps can choose not to mirror the video. To be
consistent, we can follow mediacapture spec. FRONT means "The camera is facing
toward the user (a self-view camera)."

https://www.w3.org/TR/mediacapture-streams/#idl-def-VideoFacingModeEnum.user

[shenghao, 2017/01/10 12:16:35]

Done.

+  FRONT,

[wuchengli, 2017/01/09 08:28:00]

Also document BACK.

// The source is facing away from the user (viewing the environment).

[shenghao, 2017/01/10 12:16:35]

Done.

+  BACK,
+};
+
 // Policies for capture devices that have source content that varies in size.
 // It is up to the implementation how the captured content will be transformed
 // (e.g., scaling and/or letterboxing) in order to produce video frames that
 // strictly adheree to one of these policies.
 enum ResolutionChangePolicy {
   // Capture device outputs a fixed resolution all the time. The resolution of
   // the first frame is the resolution for all frames.
   RESOLUTION_POLICY_FIXED_RESOLUTION,
 
   // Capture device is allowed to output frames of varying resolutions. The
@@ skipping 99 matching lines @@
   // Policy for resolution change.
   ResolutionChangePolicy resolution_change_policy;
 
   // User-specified power line frequency.
   PowerLineFrequency power_line_frequency;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_VIDEO_CAPTURE_TYPES_H_